Arizona's tough new law cracking down on illegal immigration is dividing police across the nation, pitting officers against their chiefs and raising questions about its potential to damage efforts to fight crime in Hispanic communities.

Sen. John McCain's re-election bid lost its campaign manager and another veteran Republican official, part of a shake-up for the Arizona lawmaker locked in a tight primary race with radio host and former Rep. J.D. Hayworth.

Los Angeles on Wednesday became the largest city yet to boycott Arizona over its tough new law targeting illegal immigration in a move that likely will affect some $8 million in contracts with the state.

Among other things, financial disclosure forms require lawmakers to list assets such as stocks, bonds, mutual funds and real property to identify potential conflicts of interest. Lawmakers also have to assign broad ranges of value to each asset. But estimating the maximum total value of a lawmaker’s holdings is impossible in many cases. The reason: The forms have an uppermost range of “more than $100,000,” and 49 of 90 lawmakers serving at the start of the 2010 session listed one or more assets in the highest range.